Publication 28 - Postal Addressing Standards > 1 Introduction > 13 Address Information Systems Products and Services
The Postal Service offers a wide range of products and services to help mailers improve and maintain address quality. The products and services listed below can lower production and postage costs by reducing undeliverable–as–addressed mail and by qualifying more mailpieces for postage discounts.
For information about address information products or services, go to PostalPro at https://postalpro.usps.com or contact the National Customer Support Center (NCSC) through the contact information available after the following list:
Use the following contact information for the NCSC:
CUSTOMER SUPPORT DEPARTMENTNATIONAL CUSTOMER SUPPORT CENTERUNITED STATES POSTAL SERVICE225 N Humphreys Blvd Ste 501MEMPHIS TN 38188–1001